SANDISK Extreme PRO 400GB CFexpress 4.0 Type B Card

The SanDisk Extreme PRO 400GB CFexpress 4.0 Type B Card is a next-generation high-performance memory card designed for professional photographers, filmmakers, and hybrid creators who need exceptional speed, responsiveness, and reliability. Built for demanding capture formats and fast post-production workflows, this card is well suited for high-resolution RAW stills, long burst sequences, and advanced video recording including high-bitrate 8K and beyond on compatible cameras.

Compatible With

• CFexpress Type B-compatible cameras and devices
• Select professional mirrorless, DSLR, and cinema cameras from Canon, Nikon, Panasonic, Leica, and others that specifically support CFexpress Type B media

Next-Generation CFexpress 4.0 Performance

Leveraging the CFexpress 4.0 standard, this card delivers dramatically faster transfer rates than previous generations of removable media. With maximum read speeds up to 3700MB/s and maximum write speeds up to 3200MB/s, it helps reduce buffer-clearing delays in-camera and significantly shortens file transfer times when moving large projects to a computer. For professionals working under tight deadlines, that speed can make a meaningful difference both on set and in post.

Built for High-End Photo and Video Capture

The 400GB capacity offers a strong balance between generous recording space and efficient card management on professional shoots. It is especially useful for creators capturing continuous RAW bursts, 4K and 8K video, or high-bitrate recording formats that quickly consume storage. The card is designed to keep pace with modern camera systems that demand sustained write performance, helping reduce the risk of dropped frames or interrupted recording in supported workflows.

Professional Workflow Benefits

Fast storage is about more than benchmark numbers. In real-world use, a card like this can improve the overall shooting experience by enabling longer burst sequences, smoother camera performance, and quicker turnaround times when offloading media. Wedding photographers, sports shooters, wildlife specialists, documentary filmmakers, and commercial production teams can all benefit from the speed headroom this card provides. It is particularly valuable when working with large RAW files and codecs that demand both sustained speed and dependable media behavior.

Durability for Demanding Use

SanDisk's Extreme PRO family is built with professional use in mind, and this CFexpress Type B card is intended to withstand the pressure of field production and frequent handling. Whether you are working on location, in a studio, or traveling between assignments, durable construction helps protect your media investment. For professionals, dependable storage is just as important as speed, and this card is designed to support both priorities.

Why Choose CFexpress Type B

CFexpress Type B has become a preferred format in many advanced cameras because it offers a combination of compact size, outstanding throughput, and strong performance for modern image capture. Compared with older card standards, CFexpress Type B provides much greater bandwidth for today's large sensor cameras and high-resolution video systems. If your camera supports this format, a CFexpress 4.0 card such as this model can unlock faster data handling and better workflow efficiency than legacy media options.

Who It Is Best For

This card is an excellent choice for professional and advanced users who routinely shoot fast action, long events, wildlife, sports, news, commercial campaigns, or cinematic video. It also makes sense for creators who need to move data quickly at the end of a session and want high-capacity media that can keep up with premium camera bodies. If your camera's performance is limited by slow storage, upgrading to a high-end CFexpress Type B card can be one of the most impactful accessories in your kit.

Recommended Accessories

To get the most from this memory card, pair it with a high-speed CFexpress Type B card reader compatible with CFexpress 4.0 or USB 3.2/USB4 workflows, a rugged media case for transport, and a reliable backup drive or SSD for immediate data redundancy. Professional users may also want multiple matched cards for consistent performance across long shoots and dual-slot recording workflows where supported by the camera.

Usage Tips

For best results, confirm that your camera explicitly supports CFexpress Type B media and check whether a firmware update is recommended by the camera manufacturer. Format the card in-camera before important shoots, avoid removing the card while the access light is active, and offload files with a high-quality CFexpress Type B reader to achieve optimal transfer speeds. Maintaining an organized media workflow and backing up footage immediately after capture are also essential best practices for professional work.

Brand and Product Line Background

SanDisk has long been one of the most recognized names in flash storage, serving everyone from casual users to demanding professionals. The Extreme PRO line represents the company's premium tier, developed for creators who need speed, reliability, and consistent performance under pressure. As camera systems continue to push higher resolutions, faster frame rates, and larger file sizes, products like this CFexpress 4.0 Type B card are part of the ongoing evolution of professional capture media.